// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package sql

import (
	"encoding/json"
)

type (
	historyNodePaginationToken struct {
		LastNodeID int64
		LastTxnID  int64
	}
)

func newHistoryNodePaginationToken(
	nodeID int64,
	transactionID int64,
) historyNodePaginationToken {
	return historyNodePaginationToken{
		LastNodeID: nodeID,
		LastTxnID:  transactionID,
	}
}

func serializeHistoryNodePaginationToken(
	token historyNodePaginationToken,
) ([]byte, error) {
	return json.Marshal(token)
}

func deserializeHistoryNodePaginationToken(
	bytes []byte,
) (historyNodePaginationToken, error) {
	var token historyNodePaginationToken
	err := json.Unmarshal(bytes, &token)
	return token, err
}
